BlackHawk® pre-seed herbicide enters the heat of the battle with fast, flexible and complete broadleaf weed control in cereals, soybeans and corn.

Technical information

Active ingredients: Group 14 (pyraflufen-ethyl), Group 4 (2,4-D ester)
Rainfast: 1 hour
Treatment area: One case treats 40 acres at 445 mL/ac.
Tank-mix order: BlackHawk, glyphosate
Notes: For best results, use higher water volumes for good coverage and contact activity
PCP#: 32111

Registered crops

  • Barley
  • Field corn
  • Oats
  • Rye
  • Soybeans
  • Wheat (spring, winter)

Weeds controlled with a glyphosate tank-mix

  • Burdock (prior to 4 leaf)
  • Canada fleabane (suppression including glyphosate-resistant biotypes)
  • Cocklebur
  • Common ragweed
  • Daisy fleabane
  • Dandelion
  • Giant ragweed (including glyphosate-resistant biotypes)
  • Lamb’s-quarters
  • Mallow
  • Mustards
  • Night-flowering catchfly
  • Pigweeds
  • Plantain
  • Prickly lettuce
  • Shepherd’s-purse
  • Sow thistle
  • Stinkweed
  • Wild buckwheat
  • Volunteer canola


  • THREE MODES OF ACTION when tank-mixed with glyphosate
  • FLEXIBILITY to apply up to one day post-planting in soybeans
  • STRONGER RESISTANCE MANAGEMENT with two active ingredients that control glyphosate-, Group 2- and triazine-resistant biotypes
  • FASTER CONTROL through systemic and contact activity for broad-spectrum weed control
  • WIDE SPECTRUM CONTROL of broadleaf weeds
  • Convenient all-in-one formulation
  • Tank-mixable with most pre-emergent herbicides
  • No surfactant required

Weed control challenge

Glyphosate alone used to provide an effective burndown option ahead of corn, cereals or soybeans. But the widespread adoption of herbicide-tolerant crops, and the alarming spread of glyphosate- and Group 2-resistant weeds including Canada fleabane, giant and common ragweed, and others, has dramatically reduced the effectiveness of glyphosate-only control programs.

Nufarm solution

The all-in-one formulation of BlackHawk makes it easier for growers to spray when they need to – up to one day after planting soybeans. When tank-mixed with glyphosates like Credit Xtreme, BlackHawk delivers faster, more complete weed control in a pre-emergent burndown treatment than glyphosate alone, Group 2 and Group 14 only herbicides. With two active ingredients and two modes of action, BlackHawk doubles as an effective tool for resistance management.


For specific crop usage information see label for details